Kimpsion WA6-VR RLL Controller
View of Controller board.
  • J1: HD Activity LED Connector
  • J2: Hard Drive #1 Data Connector
  • J3: Hard Drive #0 Data Connector
  • J4: Hard Drive Control Connector
  • J7: Floppy Drive Connector
    • Default settings are in Bold or are selected by a .
    J5: Options (1/2): Winchester Mode
  • Open for Latched Mode.
  • Jumpered for Non-Latched Mode.
    • (3/4): Error Correction (ECC) Mode
  • Open for Four (4) Byte ECC.
  • Jumpered for Seven (7) Byte ECC.
    • (5/6): Caching
  • Open to Enable Caching.
  • Jumpered to Disable Caching.

    • J6: BIOS

  • Open to Enable the BIOS.
  • Jumpered to Disable the BIOS.

    • J8: Hard Drive I/O Address

  • (2/3): Primary Address.
  • (1/2): Secondary Address.

    • J9: Floppy Drive I/O Address

  • (2/3): Primary Address.
  • (1/2): Secondary Address.

    • J10: Grounding Option

  • Open for seperate circuit & chassis grounds.
  • Jumper to connect the grounds.

    • J11: Floppy Precompensation

  • Open for 125ns precomp.
  • Jumper for 187ns precomp.

    • J12: Dual Speed Floppy Support

  • Open for Single Speed Floppys only (300 RPM).
  • Jumper for Dual Speed Floppy Support (300/360 RPM).

    • The WA6-VR BIOS contains a Low Level Formatter routine, accessed through the Debug command at offset :5 (ie: g=cc00:5). CMOS should be set to Type #1 for any drives attached... The controller will handle any translation required.
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